Pipeworking machine



Dec. 1, 1964 J. BATEMAN 3,159,071

PIPEWORKING MACHINE Filed Nov. 25, 1960 4 Sheets-Sheet 1 INVENT OR JCSEPH L. BATEMAN BY w W 'rro EYS- Dec. 1, 1964 J. L. BATEMAN PIPEWORKING MACHINE 4 Sheets-Sheet 2 Filed Nov. 25. 1960 INVENTOR V JOSEPH L.BATEMAN FIG. l7.

FIG. l6.

Dec. 1, 1964 J. 1.. BATEMAN PIPEWORKING MACHINE 4 Sheets-Sheet 4 Filed NOV. 25, 1960 FIG. II.

INVENTOR JOSEPH L. BATEMAN Unit d s sPflw fQfiw 3,159,071; V 1 r 1 PIPEWORKING MA Joseph L. Batenian, 3412 University; Blvd. E, v f Hyattsville, Md.Q I Filed Nov;25;1960,Ser.No.71,708, V screams. (ores- 4 11) 1 This invention relates to apipeworking machine and more partioularly -to a -rnachine for cutting and-cleaning pipe; preparatory to installation. t

-Pipe and copper tubing, in particular, is .cut'and'finishedby use of various" similarly operated'rn-aehine's; illustrative of which are the Clean-O-Matiomachine manufactured by Stockmeister & Prins of Weliston Ohio, and the Oster machine' of the Oster Manufacturing Company of Wickliife; Ohio. With' -bothof these machines, a lengthjof copper-tubing is first placed oru roller supportsand r-. tated, pursuant to which a cutting'knife gradually cuts the peripheral wall of the rotating pipeuntil the latter is completely severed. As a resultof this cutting operation, however internal and externalburrs are left on-the pipe ends at Lthe locus of the cute This necessitateslthe-provi sio'n of tools to remove both the internal and external burrs. The final step in finishing' the itube, prior to installation; is the. cleaning ofthe terminalsthereof. This is done by means of r'otary steel brushea the component *parts of which, it has been found, become,bent and distorted after atimeandtare then ineffective. t

. Itis. an object of this invention; therefore, to provide a pipeworking machine including means-fort cutting! pipe 3,159,071 Pth 2 4.

I supportforming apartofthe-present invention; showing the operating handle thereof in inoperative positionj;

' FIG." dis-an enlarged side'elevational view similar to View of the pipe 'supportiiig-trqugh forming part of-the without leaving internal or -external burrs at the locus of the cut.

:w fOthenobjects lareio'" provide a pipeworkin'gmachine tiOi15zIh6; assembly permitting free movement of the pipe under vurging of the support; to provide rotaryi cleaning elements-selectively engageable with the interiorand'exterior surfaces of the pipegthe elements including abrasive rnembersmovable into cleaningeng'agement with'the pipe walls; to provide cleaningelements comprising shoernembers to which abrasive members are removably-att'ached;

the shoes being in spring-pressed; engagement with the pipe periphery; and to provide a pipeworking machine which-maybe operated by one person;

d Other objects of the-invention wil1-;be jmanifest from the, following description of the present preferredform of the invention, takenin connectionwith. the accompanying drawings, wherein: d FIG. 1 is a frontelevational viewofa pip eworking machine constructedin accordance with the present .inyen-I tion and'illustrating its application; J

FIG. 2 is' a top plan View of the same, portions thereof, being broken away to disclose details ofeonstructioii;

FIG; 3 is a side elevational view of the'machinebf the present invention;

' FIG. 4 is an enlarged fragmentaryjtop plan viewof the present machine, showing to adva ntage the pipe support forming a part thereof; f l I FIG. 5 is an enlarged side e'levationalview of the pipe present invention,-

illustrating its use with pipe of varying diarneterx i '1 FIG. 9-is a fragmentary top-plan-view ofthie pipes upport forininga part of tbe';present invention, showing to advantage thepipe support rollers-and pipe cha ing FIG. 10 is an" enlarged fragnentary sectionalview of a pipe support rollerr H BIG. 11 isjan enlarged fragmentary section alview of the pipe chain mechanism forming a part of the pipe support of thepresent invention; 1 p t FIG. "12 is aplanview, partially in'jsection, of the supportfor holdingthe aftend of pipe, forming a part of the present invention; I

FIG.-'13 is an enlarged vertical sectional view' of an external cleaner for pipe terminals forming a part of the present invention; I FIG. 14 is a sectional view taken along the lines 14-14 051 16513; lookin gfiin the direction of the arrows; A

FIG; 15 is an enlargedsectional-viewof an internal eleaner-forpipeg i 'FIG. 16*isa sectional view taken alongthe lines 16-16 of FIGZ; 1'5 lookin'g in the directio'n of the arrows; and} a FIG: 17'is 'a perspective view offa'cleaner shoe forming apart ofthe present-invention. I :Jr Referring now in greater detailt tothe drawings, and more particularly to FIGSL -I, 2-, and 3 thereof, the pipe workingrnnc'hine 'of t he present invention comprising a base '20 preferably rnourited on casters '21 or other suit able mobile meansion which base isa rectangulanfrarne including vertical'ine'rnbers 22 and horizontal members 23; Mounted withinlthe'franie on base 20 near the front edge thereof 'isatmotor 24- frorn which extends a pair of shafts designated "25and 26t1 'Apulley'27 is fixed to drive' shaft 25,- wliich pulleyis adapted, to receive a' drive belt 28 which extends rearwardlyiofithe machine into" engage ment witha second pulley 29 fixedly mounted 'onanidler shaft 30, suitablyjournaled in: bearings :31. Achieular sawI32'isfixed to and movableiwith one terminal of shaft 3t); said sawbeing=proyidedwith a cover 325 and spring-v urged guards -32"; Saw; 32'Imay be of any suitable diam. eter land'iadaptedtorcutting metal, a 10 inch-Simonds saw-toothed blade having .been found to produce optimum results. t 1, w, j ,As 'shownato advantage in;F-IG.' 2, a small pulley 33 f is fixed .to drive shaft 26 and is provided with a drive belt 34 extendingrrearwardly to;a larger'pulley 35 mountedon further includes a pipe support or carriage generally designated 43, disposed in a plane at right angles to the plane of saw 32 and including spaced supporting bases 44 suitable secured to frame members 23 at intervals longitudinally of the machine. Bases 44 are provided with aligned cylindrical bores adapted to receive a cylindrical shaft 45 to which is fixed a pipe-supporting plate 46. A second supporting plate 47, coextensive with plate 46, is secured to the latterat right angles intermediate its width to form a pipe supporting trough 48 adapted to receive a pipe 49, which pipe may be of varying diameter as illustrated in FIG. 8. Plate 46 is provided with an inwardly extending slot or recess 50 at a point adjacent circular saw 32, which slot extends partially through plate 47, and, upon actuation of pipe support 43, receives the saw in order to effect cutting engagement of the saw with pipe 49 resting in pipe-supportingtrough 48. Supporting plates 46 and 47 are provided with pairs of rollers 51 positioned on opposite sides of slot 50 and disposed longitudinally of the supporting plates. As shown in FIGS. 9 and 10, each roller 51 has axial pintles 52 which are rotatably mounted in journals 53. The terminal portions of plates 46 and 47 are also provided with pipe-engaging rollers designated 51' which are similar to rollers 51. Rollers 51 and 51' are adapted to engage the outer peripheral wall of pipe of large diameter which must be rotated in order to permit severance thereof by circular saw 32. Pipe of smaller diameter requires no rotation since saw 32 is large enough to cut the pipe in one movement.

In connection with support or carriage 43, thereis provided a pipe retainer chain 54 adapted to be secured to plate 46 at 55 and wrapped around pipe 49 to prevent relative longitudinal movement of the latter with respect to carriage 43. Chain 54 includes a plurality of links 56 4 i to provide a series of celaning members for the pipe. For this purpose, male cleaners of different sizes, generally designated 73, 73 and 73" are fixed to and rotated by shafts 26, 36 and 41 respectively, the cleaners extending beyond one side of the machine for ready use preparatory to pipe installation. In addition to male celaners 73, 73

land 73", there are also provided, a plurality of female cleaners of different sizes, generally designated 74, 74'

joined together in pairs in spaced parallel relation by connectors 57. As shown to advantage in FIGS. 5, 6, and 7, it is within the contemplation of the present invention to provide rollers 58 rotatably mounted on the outer face of links 56 at predetermined spaced intervals, which rollers engage the outer periphery of pipe 49. In conjunction with rollers 51 of supporting plates 46 and 47, rollers 58 facilitate rotation of pipe of large diameter to effect ready cutting thereof. A coil spring 59 is interposed between the last link 56 and anchor point 55 of chain 54 in order to allow a limited amount of play in the chain for reasons which will be hereinafter more clearly set out.

Referfring now to FIGS. 5 and 6, the machine of the present invention further includes an operating handle 60 for pipe support 43, which handle includes an angularly disposed lever arm 61, one terminal of which is bent downwardly to form a pistol grip 62 which is grasped by the operator of the machine. Handle 60 is pivotally mounted on one end terminal of supporting plate 47 by means of a plate-carried pin 63 which is engageable in a slightly arcuate slot 64 of lever arm 61. Laterally adjacent pin 63 is a locking pin 65 adapted for insertion in a terminal slot 66 of lever arm 61, which slot is of similar configuration to slot 64. Downward movement of operat ing handle 60 elfects entry of pin 65 into slot 66 to lock handle 60 into engagement with pipe support 43 (see FIG. 6).

As shown to advantage in FIGS. 5, 6, 7 and 11, spaced supporting blocks 67 are secured to lever arm 61 by screw means 68 through each of which blocks extends a chain retainer 69. One end of retainer 69 is hook-shaped as indicated at 70 for selective engagement withconnectors 57 of chain 54. The opposite end of retainer 69 is threaded, as indicated at 71 to receive a wing nut 72 which, in conjunction with spring 59, serves to adjust the retainer for proper engagement with the chain 54 and to compensate for use thereof with different sized pipe. The provision of two chain retainers insures optimum retention of both small and large pipe.

It is within the contemplation of the present invention abrasive element 82.

86 for urging shoes 79' inwardly into engagement with and 74" which extend beyond the opposite side of the machine, the female cleaners being rotatably mounted by shafts 25, 36 and 41.

Male cleaners 73, 73 and 73" are of like construction, and, as shown in FIGS. 15, I6 and 17, generally include a cylindrical body portion 75, the innermost end of which is reduced to form a key 76 adapted for insertion in a complemental keyway of shafts 26, 36 or 41. Cylindrical body portion 75 is further provided with a threaded axial bore which extends into shaft 26, 36 or 41. A bolt 77 threadedly engages the bore to fix body portion 75 to the shaft. Referring now to FIG. 15, it will be seen that body portion 75 is provided with a plurality of peripheral cut out sections 78 which extend from the front terminal of the body to a point adjacent the aft end thereof. Each cut-out pontion 78 is adapted to receive a shoe 79, the upper margin of each of which extends considerably beyond the outer periphery ofbody portion 75. As shown in FIG. 17, each shoe is provided with lateral extensions 80 which are approximately half the height of the shoe. The lower portion of the side walls of each shoe 79 are further provided with longitudinal slits 81 into which the terminals of an abrasive element 82 are fitted. Element 82 may be of any suitable material, such as, for example, metal embedded with carbide chips, with a backing of spring metal, and is readily removed for replacement. Shoes 79 are held in perpiheral cut-out portions 78 by means of a retainer ring 83 which is in abutting engagement with an annular peripheral shoulder 75' of body 75, a portion of the ring being superjacent cut-out portions 78 and in contiguous relation with one of the extensions 80 of shoe 79 to prevent casual displacement of the aft end of the shoe. There is additionally provided, a retainer washer 84 of circular conformation adapted to be interposed between the head of bolt 77 and body portion 75, the washer including a peripheral flange 85 bent inwardly for contiguous relationship with the periphery of body portion 75. Flange 85 is superjacent cut-out portions 78 and engages the other extension 80 of each shoe 79 in the same manner as retainer ring 83. A leaf spring 86 in the bottom of each cut-out portion 78 engages the underface of each shoe 79 and urges the latter to its outermost position.

Female cleaners 74, 74' and 74" each include a cylindrical cup 87, the base of which is provided with a shaft extension 88 which issues into a key 89 adapted for engagement with a complemental keyway formed in the end of the shaft to which the cleaner is attached. The base of cup 87 and shaft extension 88 are provided with a threaded bore which extends into the shaft for the reception of a retaining bolt 90. It is Within the contemplation of the present invention to provide a plurality of rectangular cut-out sections 91 in spaced relation along the inner periphery of the cup which are adapted to receive shoes 79' which are of the same construction as those employed in the male cleaners, the shoes having lateral extensions 80' and longitudinal slits 81' adapted to receive There is also provided a leaf spring the outer periphery of the pipe to be cleaned. The aft ends of shoes 79' are retained in position by a retainer ring 92, the innermost terminal of which engages an annular shoulder 87 of cup 87 The forward end of shoes 79' are maintained in proper position by an O-shaped retainer washer 93 secured to the outer end of cup 87 by bolts 94. Washer 93 includes an inwardly extending circular flange 95 which. engages shoe extension retain. the latter within cut-out sections 91.

Referring. now to FIGS. ,1. and. 12, it is within the contemplation of the present invention to provide an assemb y gen ra l s nated whi ma P i fat y r te mined. Pa nt. e ot fr mfi mae for holding the aft end of a pipe projecting fromthe pipe support. Assembly: 96 includes base 97 to which is centrally secured, a vertical tubularpipe 98. A shaft 99 is. telescopically housed within vertical tubular. pipe 98, the shaft being held in any predetermined fixed position by a setscrew 101). As shown to advantage in FIG. 12, the upperportion of shaft 99 is bent to form a goose neck 101 from the terminal of which pends a spiral spring 102. A loop 103 is secured to the lower terminal of spring 162, which loop is adapted to receive pipe 49 which, as indicated, may be of varying diameter. Spring 192 permits yieldable movement of loop 103 together with pipe 49 in response to movement of pipe support 43. a

In use of the present invention, the pipe to be cut is placed in trough 48 of pipe support 43, and the aft end thereof is placed within loop 103 of assembly 96. As shown in FIG. 8, if the pipe is of /2" to 1" diameter, the outer periphery thereof will not contact rollers 51 of supporting plates 46 and 47, but if the. pipe diameter is 2" or larger, the outer periphery will contact a set of rollers 51 and 51' on each of plates 46 or 47. After the pipe is in the desired position on the support, pipe chain 54 is wrapped around the pipe and engaged with one of the chain retainers 69, dependingon the size of the pipe. To adjust the retainer for optimum engagement with connector 57 of the pipe chain, wing nut 72 is operated to move the retainer longitudinally of the chain. Adjustment of the retainer, together with the provision of spring a 59 enables the rollers of the pipe chain to firmly grip the outer periphery of the pipe to prevent longitudinal movement thereof. Where pipe of large diameter is to be cut, rollers 58, in cooperation with rollers 51 and 51' of pipe support 43 permit rotation of the pipe during the cutting operation.

After the pipe chain and retainer have been interengaged, handle 60, which up to this point has been pivoted to an end terminal of support plate 47, is pushed downwardly and inwardly until pin 65 of plate 47 has entered slot 66 to lock handle 6% into engagement with pipe support 43. Motor 24 is next actuated to rotate saw 32. Grip 62 of operating handle 60 is then moved forward to effect a corresponding movement of pipe 49 until saw 32 enters slot 50 to effect severing of the pipe. Where a circular saw of 10" diameter is employed, cutting of pipe of small diameter is readily effected, without adjustment of the pipe. However, in the case of pipe of larger diameter, saw 32 can only cut a portion of the pipe wall in situ. After this operation has been completed, the operator simply exerts arotary force on the pipe and, by virtue of rollers 51, 51' and 58, the pipe is readily rotated so that the remaining portion of the pipe wall may be out.

After the cutting operation, the pipe is removed from the pipe support and, since saw 32 leaves no exterior or interior burrs on the pipe, the conventional burr removal step is obviated. The final step in preparing the pipe for use is the cleaning of the inner and outer periphery of the pipe by means of male cleaners 73, 73' and 73" and female cleaners 74, 74' and 74", the particular cleaners used depending upon the diameter ofthe pipe. To clean the inner periphery of the pipe, the latter is sleeved over the appropriate cleaning member so that abrasive 82, carried by shoe 79, is urged by spring 86 into frictional engagement with the pipe wall. Rotation of the cleaner member is effected by motor 24. After the inner periphery of the pipe is cleaned, the pipe is inserted in the appropriate female cleaner 74, 74' or 74" and a similar action takes place on the outer peniphery of the pipe wall.

It will be noted that, by virtue of the arrangement of 5' and.41, the cleaning members rotate at ditferentspeeds to facilitatecleaning of pipe and pipe fittings.

The machine of the present invention is adapted to be readily rolled. from place to place as needed. By virtue of assembly 96, which holds the aft end of the pipe, the

.. While I have herein described a preferred form of my invention, it is nevertheless to be understood that various changes may be made therein, without departing from the spirit and scope of the claims hereto appended.

What is claimed is:

a l. A pipeworking machine including a frame, a cutting tool rotatably mounted on the frame, power means for rotating said cutting tool, a pipe support pivotally mounted on said frame proximate said cutting tool, means for effecting cutting engagement of the cutting tool and the pipe on the pipe support, and a flexible lock-ing member carried by the pipe support and engageable with the pipe periphery for preventing longitudinal movement of the pipe relative to the pipe support, said flexible member including rollers engageable with the pipe periphery to facilitate rotation of the pipe on the pipe support.

2. A pipeworking machine including a frame, a circular saw rotatably mounted on the frame, a pipe support pivotally connected to the frame, said pipe support being movable in the direction of said circular saw to effect cutting engagement of the latter with the pipe, a pipe retaining chain carried by said pipe support and engageable with the pipe periphery for preventing relative longitudinal movement of the pipe with respect to the pipe support, and rollers carried by said pipe support and by said pipe retaining chain engagable with the pipe periphery for facilitating rotation of the pipe during the cutting operation.

3. A pipeworking machine including a frame, a cutting tool rotatably mounted on the frame, power means for rotating said cutting tool; a pipe support pivotally mounted on said frame, said pipe support being movable in the direction of said cutting tool to efiect cutting engagement of the latter with the pipe, 2. flexible locking member carried by the pipe support and engageable with the pipe periphery for preventing longitudinal movement of the pipe relative to the pipe support, said flexible member including rollers engagable with the pipe periphery to facilitate rotation of the pipe on the pipe support and an assembly remote from the frame, the assembly including a loop for holding the aft end of the pipe, projecting from the pipe support, uniplanar with the entire length of the pipe, said assembly loop being yieldable.

4. A pipeworking machine, as set out in claim 3, wherein the assembly loop is vertically adjustable.

5. A pipeworking machine, as set out in claim 4, wherein the assembly is portable.

6. A pipeworking machine including a frame, a circular saw rotatably mounted on the frame, power means for rotating said circular saw, a pipe support pivotally mounted on said frame and movable toward and away from said circular saw to effect cutting of pipe on the pipe support, a flexible locking member carried by the pipe support and engageable with the pipe periphery for preventing longitudinal movement of the pipe relative to the pipe support, spaced pins mounted on said pipe support, and an operating handle connected to said pipe support for moving the latter toward and away from said circular saw, said operating handle including a lever arm having a closed slot intermediate its length adapted to receive one of said pins, retaining means on said lever arm with which said flexible locking member is detachably engaged, said lever arm having an open terminal slot selectively engagable with the other of said pins mounted on the pipe support upon downward movement of said-lever arm, to lock said operating handle to said pipe support.

References Cited in the file of this patent UNITED STATES PATENTS Halsey et a1 Jan. Brasch Jan. Fisher Oct. Hutchinson May Sehwarz Feb. Carpmail d- July Pero Jan Pealei June 4, 1946 v Barth 1 Apr. 21, 1953 v Whittenberg" Dec. 25, 1956 De Witt Dec. 3, 1957 Swedmar'k Q. Jan. 7, 1958 Lindh Oct. 14, 1958 FOREIGN PATENTS France June 18, 1953 Great Britain July '27, 1960 

1. A PIPEWORKING MACHINE INCLUDING A FRAME, A CUTTING TOOL ROTATABLY MOUNTED ON THE FRAME, POWER MEANS FOR ROTATING SAID CUTTING TOOL, A PIPE SUPPORT PIVOTALLY MOUNTED ON SAID FRAME PROXIMATE SAID CUTTING TOOL, MEANS FOR EFFECTING CUTTING ENGAGEMENT OF THE CUTTING TOOL AND THE PIPE ON THE PIPE SUPPORT, AND A FLEXIBLE LOCKING MEMBER CARRIED BY THE PIPE SUPPORT AND ENGAGEABLE WITH THE PIPE PERIPHERY FOR PREVENTING LONGITUDINAL MOVEMENT OF THE PIPE RELATIVE TO THE PIPE SUPPORT, SAID FLEXIBLE MEMBER INCLUDING ROLLERS ENGAGEABLE WITH THE PIPE PERIPHERY TO FACILITATE ROTATION OF THE PIPE ON THE PIPE SUPPORT. 